Filed under: Awards, Cannes, Celebrities and ControversyBetween upcoming high-profile work as an actor (including a role as Harvey Milk and his voice work for the English dub of Persepolis), and the honors, acclaim and awards nominations for Into the Wild, it's been a great year for Sean Penn professionally. And now it seems 2008 is going to be just as interesting for the writer-actor-director, as Variety brings news that Penn will serve as the head of the Cannes jury for the 2008 edition of...